Iav Curtain Wall LED Zaub Kev daws teeb meem: Plaub Qhov Tseem Ceeb Tseem Ceeb kom xav txog Ntau qhov siab - nce cov tsev hauv nroog muaj cov iav kab hlau rhuav phab ntsa, uas ua haujlwm zoo tshaj plaws sab nraum zoov tshaj tawm. Los ntawm LED pob tshab npo thev naus laus zis, cov tuam tsev no tau hloov pauv mus rau peb - qhov loj me ntawm optoelectronic advertising platforms, ib qho qauv uas tau txais kev nyiam nyob hauv ob lub teb chaws thiab thoob ntiaj teb hauv xyoo tas los no.
Thaum tsim lub iav kab hlau rhuav phab ntsa LED zaub screen, qhov tseem ceeb yuav tsum tau txiav txim siab, suav nrog cov ntsiab lus tso saib, qhov chaw nyob, qhov screen loj, thiab suav pixel. Ib txhij, nws yog ib qho tseem ceeb los xyuas kom meej tias cov txheej txheem tsim khoom thiab cov kev qhia tshwj xeeb yog tsim nyog rau cov ntawv thov tiag tiag ntawm cov iav kab hlau rhuav phab ntsa, thiab tom qab ntawd muab qhov no nrog cov nqi tsim nyog.
I. Pixel Pitch Pixel pitch yog qhov kev ncua deb ntawm cov chaw ntawm ob lub hlaws LED uas nyob ib sab, ntsuas hauv millimeters (mm). Qhov pom graininess feem ntau yog los ntawm tib neeg lub qhov muag qhov kev daws teeb meem tsawg; thaum saib ob lub ntsiab lus ntawm ib qho kev ncua deb, yog tias lawv nyob ze ua ke, tib neeg lub qhov muag tsis tuaj yeem paub qhov txawv ntawm lawv. Nyob rau hauv xyoo tas los no, nrog rau kev nce qib hauv LED pob tshab npo tsim tshuab, kev daws teeb meem ntawm cov iav kab hlau rhuav phab ntsa LED cov lus tau txhim kho tsis tu ncua. Cov iav kab hlau rhuav phab ntsa tsim tsim tau hloov zuj zus los ntawm qhov pib xaiv qhov tsawg tshaj plaws pixel pitch specification rau xaiv qhov haum pixel suab specification.
Yog li, ua li cas koj xaiv qhov haum pixel pitch specification? 1. Pixel suab yog qhov tseem ceeb hauv kev xaiv LED npo qauv thiab txiav txim siab qhov kawg ntawm cov zaub. Me me pixel suab txhais tau hais tias siab dua pixel ceev, ua rau nws tsim nyog rau siab - txhais cov ntsiab lus playback.
2. Pixel suab thiab pob tshab nthuav tawm kev lag luam -tawm. Qhov me me pixel suab feem ntau ua rau qis dua pob tshab. Qhov no yog vim hais tias me me pixel suab ua rau ntau dua pixel ceev, yuav tsum tau ntau LEDs yuav tsum tau teem ib cheeb tsam, inevitably txi ib co pob tshab. High transparency yog precisely qhov zoo tshaj plaws ntawm pob tshab LED cov ntxaij vab tshaus, tab sis nce pob tshab los ntawm tus nqi ntawm pixel loj dua, cuam tshuam cov duab clarity thiab zaub zoo.
3. Kev saib deb yog qhov tseem ceeb hauv kev xaiv cov qauv. Feem ntau, qhov ntau dua qhov pom qhov deb, qhov loj ntawm qhov screen, ua cov qauv loj dua; conversely, qhov ze qhov pom qhov deb, qhov me me ntawm qhov screen, ua cov qauv me dua.
Txawm li cas los xij, nrog kev nce qib thev naus laus zis, pixel suab thiab pob tshab tuaj yeem txhim kho ntxiv kom ua tiav qhov zoo tagnrho, xws li pob tshab ntawm 90% thiab pixel suab ntawm 3-6 hli.
II. Ntim Technology
Ib qho tseem ceeb ntawm kev txiav txim siab LED zoo yog cov ntaub ntawv tseem ceeb, xws li cov khoom siv hauv txee, chips, LED hlaws, thiab cov khoom siv hluav taws xob. Lwm qhov tseem ceeb yog cov txheej txheem ntim khoom. Pixel ntim tshuab cuam tshuam rau tag nrho cov khoom siv ntawm lub vijtsam pob tshab, suav nrog cov xim saturation thiab saib lub kaum ntse ntse, nrog rau cov nqi tsim khoom thiab kev ruaj ntseg zoo. Pob tshab LED kab hlau rhuav phab ntsa ntim tshuab feem ntau siv qhov chaw -mount (SMD) txoj kev. SMD hais txog kev txuas cov pob LEDs rau lub rooj tsav xwm hauv Circuit Court, ua raws li kev sib txuas ua ke los tsim lub vijtsam. Nws muaj cov cua kub zoo, cov xim tsis sib xws, thiab tso cai rau pem hauv ntej - kev saib xyuas sab, txo cov nqi tu thiab kev nyuaj. Tsis tas li ntawd, kev siv cov hlau sib txuas thaum lub sij hawm ntim tau ua rau cov xim zoo sib xyaw thiab lub teeb muag muag.
III. LED Control Section
Lub LED tswj seem yog lub hauv paus ntsiab lus txiav txim siab cov nyhuv. Cov tswj Circuit Court suav nrog lub siab -kev ua tau zoo ib leeg-chip microcontroller. Tus maub los xa cov teeb liab tswj thiab cov ntaub ntawv mus rau LED tsav nti los ntawm nws qhov kev tswj hwm sab hauv. Thaum tau txais cov teeb liab, LED tsav nti tsim cov kev coj ua, yog li ua tiav kev tswj hwm ntawm txhua tus liab, ntsuab, thiab xiav LED nti.
3.1 Tsav Tsheb
Lub luag haujlwm ntawm LED tsav tsheb yog kom tau txais cov ntaub ntawv xim thiab tsav lub LED pob tshab npo los tso saib cov nqi ci ntsa iab sawv cev los ntawm cov ntaub ntawv ntawd. Feem ntau muaj peb txoj hauv kev: qhov tam sim no tsis tu ncua, kev tswj hluav taws xob, thiab qhov hluav taws xob tsis tu ncua- tsis tu ncua tam sim no. Tus tsav tsheb tam sim no tsis tu ncua tso tawm qhov tam sim no tsis tu ncua, thaum qhov tso zis DC voltage sib txawv nrog cov khoom ua haujlwm. Tag nrho cov circuits tsis ntshai ntawm luv luv Circuit Court, tab sis ib tug kiag li qhib Circuit Court yog nruj me ntsis txwv tsis pub. Lub voltage tswj Circuit Court outputs ib tug ruaj voltage, thaum cov zis tam sim no txawv nrog lub load. Tag nrho Circuit Court tsis ntshai ntawm qhib circuits, tab sis ib tug kiag li luv luv Circuit Court yog nruj me ntsis txwv tsis pub. Qhov tsis tu ncua voltage-ces- txoj kev tam sim no tsis tu ncua yog qhov zoo tshaj plaws tsav tsheb Circuit Court, raws li nws pom ob qho tib si LED tam sim no thiab tswj cov LED voltage, uas pab txhim kho LED lifespan thiab txo hwj chim noj. Nws feem ntau yog siv nyob rau hauv high{10}}kawg LED khoom.
3.2 Tswj System
Cov nyhuv ntawm LED yog nyob ntawm qhov loj thiab lub sijhawm ntawm qhov tam sim no thiab qhov hluav taws xob dhau los ntawm nws. Yog li ntawd, qhov kev tswj hwm feem ntau yog tswj cov LED lub zog tso zis. Tam sim no, cov khoom siv hluav taws xob LED tsim nrog PWM (Pulse Modulation) tswj tau muaj kev hloov pauv mus txog 80% -90%, thiab cov zis hluav taws xob lossis tam sim no ruaj khov, ua rau lawv cov khoom siv hluav taws xob muaj zog heev.
PWM (Pulse Width Modulation) tswj lub sijhawm qhib / tawm ntawm LEDs. Los ntawm kev faib lub sijhawm piv rau ntau theem, LEDs tso saib cov lej sib raug ntawm qib grey (greyscale). Cov khoom ntawm cov qib grey ntawm peb lub ntsiab xim yog cov xim theoretical ntawm cov xim uas lub vijtsam tuaj yeem tsim tawm, feem ntau 256 qib. Nrog 16.7 lab xim, 24-ntsis cov ntaub ntawv tseeb xim tuaj yeem tshwm sim.
Feem ntau, PWM zaus ntau dua 100Hz; txwv tsis pub, flickering thiab scan kab yuav tshwm sim thaum saib. Tam sim no, cov ntxaij vab tshaus loj nrog 10-ntsis greyscale feem ntau muaj cov nqi tshiab ntawm 800-1000Hz, thaum lub pob tshab LED cov ntxaij vab tshaus feem ntau muaj cov nqi refresh saum 1920Hz.
IV. Kev xav tau
1) Modular chav npaj npaj, seamless screen. Thaum ua yeeb yaj kiab, cov duab yuav tsis raug txiav los ntawm seams, yog li cuam tshuam rau kev pom kev pom.
2) High sib xws thiab uniformity ntawm cov xim thiab brightness nyob rau hauv tag nrho cov screen, calibrated taw tes los ntawm taw tes. Ua kom tsis txhob muaj xim sib txawv, qhov tsaus ntuj nti, tsaus nti, thiab "patching" tshwm sim . 3) Vim qhov cuam tshuam loj ntawm lub teeb sab nraum zoov, qhov ci ntawm LED kab hlau rhuav phab ntsa yuav tsum ncav cuag 4000 cd / ㎡. Nws kuj tseem txhawb kev hloov kho lub ntsej muag ntse, ua kom haum rau kev hloov pauv ntawm lub teeb pom kev zoo rau kev pom kev zoo dua thiab nthuav dav zoo meej. 4) Lub kaum sab xis pom dav, txhawb 140℃kab rov tav thiab 140℃ntsug saib lub kaum sab xis kom txaus siab rau qhov sib txawv saib thiab ncav cuag cov neeg tuaj saib dav dua.
